Plants irregularly branched, usually in loose mats. Dorsal leaves ± asymmetric, oblong-ovate to elliptic, rounded, 0.45--0.65 mm. Ventral leaves smaller, ± symmetric, ± ligulate, rounded, 0.25--0.45 mm; laminal cells thin- to firm-walled, thickened and brown with age,10--16 × 8--13 µm, oblate-hexagonal in numerous basal, marginal rows. Perichaetial leaves ovate, obtuse to rounded. Seta 0.6--0.8 mm. Capsule 0.55--0.85 mm, pale yellow; annuli a single row of quadrate cells; peristome absent; opercula conic, obliquly apiculate to rostellate. Calyptra 0.5 mm. Spores finely papillose, 21--31 µm.

Dry areas, bark of trees and rocks; low to medium elevations; n Fla. (Jefferson Co.), e and c Ga.(Richmond Co.), s La. (Iberia Parish); Mexico (San Luis Potosí, Tamaulipas); Central America (Guatemala); West Indies (Cuba, Dominican Republic); South America (Brazil, Paraguay, Venezuela); Africa; Australia; Asia.

A. Touw (1992) noted that Malesian collections came from man-made habitats; similar habitats in the Americas should be carefully examined. Solmsiella biseriata, to the casual observer or the uninitiated, can be mistaken for a small leafy liverwort, as reflected in the genus of the basionym. However its dimorphic leaves, arranged in 4 rows, and cucullate calyptra will distinguish it from Erpodium domingense, which has more or less monomorphic leaves arranged in several rows and a mitrate calyptra.